Haihao Group Ships Heavy-Duty Hot-Dip Galvanized U-Bolts to India
Haihao Group has successfully completed the production and shipment of custom hot-dip galvanized U-bolt assemblies to a valued client in India.
This order includes multiple sizes of heavy-duty pipe U-bolts with nuts, washers, and backing plates, designed for large-diameter pipeline support and structural fastening applications.
Product Specifications
The shipment covers a wide size range to meet diverse pipeline support requirements:
Hot-Dip Galvanized U-Bolt Assemblies
(Each set includes: U-bolt + two heavy hex nuts + two washers + one backing plate)
| Pipe Size | Bolt Diameter | Type | Material | Standard | Surface |
|---|---|---|---|---|---|
| 2″ | M10 | Medium Duty | Q235B | ASTM A307 Grade A | Hot-Dip Galvanized |
| 2.5″ | M10 | 6mm Thickness | Q235B | ASTM A307 Grade A | Hot-Dip Galvanized |
| 3″ | M12 | Medium Duty | Q235B | ASTM A307 Grade A | Hot-Dip Galvanized |
| 4″ | M16 | Medium Duty | Q235B | ASTM A307 Grade A | Hot-Dip Galvanized |
| 6″ | M16 | Heavy Duty | Q235B | ASTM A307 Grade A | Hot-Dip Galvanized |
| 34″ | M42 | Heavy Duty | Q235B | ASTM A307 Grade A | Hot-Dip Galvanized |
| 36″ | M42 | Heavy Duty | Q235B | ASTM A307 Grade A | Hot-Dip Galvanized |
| 40″ | M42 | Heavy Duty | Q235B | ASTM A307 Grade A | Hot-Dip Galvanized |
| 72″ | M48 | Heavy Duty | Q235B | ASTM A307 Grade A | Hot-Dip Galvanized |
This project highlights Haihao Group’s capability to manufacture large diameter hot-dip galvanized U-bolts up to 72 inches.

Heavy duty hot dip galvanized U-bolt assemblie with backing plates shipped to India for large pipeline support
Designed for Heavy Pipeline Support Applications
These ASTM A307 Grade A galvanized U-bolt assemblies are engineered for:
- Oil & gas transmission pipelines
- Water supply and drainage systems
- Infrastructure and utility projects
- Structural pipe rack installations
The inclusion of backing plates and heavy hex nuts improves load distribution and enhances structural stability, especially for large-diameter pipelines.
Advantages of Hot-Dip Galvanized U-Bolt Assemblies
1. Superior Corrosion Resistance
Hot-dip galvanizing provides long-term protection against moisture and environmental exposure, making these galvanized pipe U-bolts for outdoor pipeline projects highly durable.
2. High Structural Strength
Manufactured from Q235B carbon steel and compliant with ASTM A307 Grade A bolt standards, these U-bolts deliver reliable tensile strength for industrial fastening.
3. Wide Size Range Capability
From 2 inch medium-duty U-bolts to 72 inch heavy-duty galvanized U-bolts, Haihao Group supports both standard and custom pipeline projects.
Quality Control and Manufacturing Precision
Each U-bolt assembly undergoes:
- Dimensional inspection
- Thread verification (M10–M48)
- Galvanized coating thickness inspection
- Load-bearing structure verification
- Complete set assembly check
Strict quality management ensures that every heavy-duty galvanized U-bolt with backing plate meets international industrial standards before shipment.
Supporting Large-Scale Infrastructure Projects in India
India’s expanding energy and infrastructure sectors require dependable pipe support systems. The successful delivery of these large-size hot-dip galvanized U-bolts for pipeline support demonstrates Haihao Group’s ability to handle bulk production, custom fabrication, and international logistics efficiently.
With extensive export experience, Haihao Group continues to provide industrial pipe fastening solutions for global engineering projects.
